The Mechanical Properties of Wood Including a Discussion of the Factors Affecting the Mechanical Properties, and Methods of Timber Testing

Tác giả
Ngôn Ngữ Nội Dung Sách
Nhà xuất bản
Năm xuất bản
2004
Định dạng sách
Nhà xuất bản sách tiếp cận
Sơ lược sách

           PART I
 THE MECHANICAL PROPERTIES OF WOOD

            Introduction

            Fundamental considerations and definitions

            Tensile strength

            Compressive or crushing strength

            Shearing strength

            Transverse or bending strength: Beams

            Toughness: Torsion

            Hardness

            Cleavability

            PART II
 FACTORS AFFECTING THE MECHANICAL PROPERTIES OF WOOD

            Introduction

            Rate of growth

            Heartwood and sapwood

            Weight, density, and specific gravity

            Color

            Cross grain

            Knots

            Frost splits

            Shakes, galls, pitch pockets

            Insect injuries

            Marine wood-borer injuries

            Fungous injuries

            Parasitic plant injuries

            Locality of growth

            Season of cutting

            Water content

            Temperature

            Preservatives

            PART III
 TIMBER TESTING

            Working plan

            Forms of material tested

            Size of test specimens

            Moisture determination

            Machine for static tests

            Speed of testing machine

            Bending large beams

            Bending small beams

            Endwise compression

            Compression across the grain

            Shear along the grain

            Impact test

            Hardness test: Abrasion and indentation

            Cleavage test

            Tension test parallel to the grain

            Tension test at right angles to the grain

            Torsion test

            Special tests

            Spike pulling test

            Packing boxes

            Vehicle and implement woods

            Cross-arms

            Other tests

            APPENDIX

            Sample working plan of United States Forest Service

            Strength values for structural timbers

            BIBLIOGRAPHY

            Part I: Some general works on mechanics, materials of construction, and testing of materials

            Part II: Publications and articles on the mechanical properties of wood, and timber testing

            Part III: Publications of the United States Government on the mechanical properties of wood, and timber testing

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